Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é a rede com o play-by-play de Marv Albert antes de 1994?
 ###Tabelas: CREATE TABLE first_class_bowling_statistics (first_class_bowling_statistics_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Matches INT, Overs INT, Maidens INT, Runs INT, Wickets INT, Average VARCHAR, Economy INT, Best Bowling VARCHAR) CREATE TABLE 1990s (1990s_id AUTO_INCREMENT PRIMARY KEY, Year INT, Network VARCHAR, Play-by-play VARCHAR, Color commentator(s) VARCHAR, Ice level reporters VARCHAR) CREATE TABLE doubles_25_12–13 (doubles_25_12–13_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Date VARCHAR, Tournament VARCHAR, Surface VARCHAR, Partner VARCHAR, Opponents in the final VARCHAR, Score VARCHAR) CREATE TABLE year_by_year_performance (year_by_year_performance_id AUTO_INCREMENT PRIMARY KEY, Coach VARCHAR, Season VARCHAR, Record VARCHAR, Home VARCHAR, Away VARCHAR, Win % INT, Average (Total) Home Attendance VARCHAR) CREATE TABLE team_career_passing_records (team_career_passing_records_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Completions INT, Attempts INT, Completion % VARCHAR, Yards INT, Touchdowns INT, Interceptions INT, QB Rating VARCHAR)  
SELECT Network FROM 1990s WHERE Play-by-play = marv albert AND Year < 1994